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-rw-r--r--data/templates/vpp/sysctl.conf.j215
-rwxr-xr-xsrc/conf_mode/vpp.py19
2 files changed, 34 insertions, 0 deletions
diff --git a/data/templates/vpp/sysctl.conf.j2 b/data/templates/vpp/sysctl.conf.j2
new file mode 100644
index 000000000..2207e2e38
--- /dev/null
+++ b/data/templates/vpp/sysctl.conf.j2
@@ -0,0 +1,15 @@
+# Number of 2MB hugepages desired
+vm.nr_hugepages=1024
+
+# Must be greater than or equal to (2 * vm.nr_hugepages).
+vm.max_map_count=3096
+
+# All groups allowed to access hugepages
+vm.hugetlb_shm_group=0
+
+# Shared Memory Max must be greater or equal to the total size of hugepages.
+# For 2MB pages, TotalHugepageSize = vm.nr_hugepages * 2 * 1024 * 1024
+# If the existing kernel.shmmax setting (cat /proc/sys/kernel/shmmax)
+# is greater than the calculated TotalHugepageSize then set this parameter
+# to current shmmax value.
+kernel.shmmax=2147483648
diff --git a/src/conf_mode/vpp.py b/src/conf_mode/vpp.py
index dd01da87e..62ec4c162 100755
--- a/src/conf_mode/vpp.py
+++ b/src/conf_mode/vpp.py
@@ -14,6 +14,8 @@
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
+import os
+import psutil
from pathlib import Path
from re import search as re_search, MULTILINE as re_M
@@ -39,6 +41,10 @@ airbag.enable()
service_name = 'vpp'
service_conf = Path(f'/run/vpp/{service_name}.conf')
systemd_override = '/run/systemd/system/vpp.service.d/10-override.conf'
+sysctl_vpp = '/etc/sysctl.d/80-vpp.conf'
+
+# Min memory 6GB (2GB reserved for vpp)
+MIN_TOTAL_MEMORY = 6
def _get_pci_address_by_interface(iface) -> str:
@@ -128,15 +134,26 @@ def verify(config):
if 'corelist_workers' in config['cpu'] and 'main_core' not in config['cpu']:
raise ConfigError(f'"cpu main-core" is required but not set!')
+ memory = psutil.virtual_memory()
+ memory_total = round(memory.total / (1024 ** 3), 2)
+ if memory_total < MIN_TOTAL_MEMORY:
+ raise ConfigError(
+ f'Not enough installed memory {memory_total}GB! '
+ f'The minimum required memory is {MIN_TOTAL_MEMORY}GB.'
+ )
+
def generate(config):
if not config or (len(config) == 1 and 'removed_ifaces' in config):
# Remove old config and return
service_conf.unlink(missing_ok=True)
+ if os.path.isfile(sysctl_vpp):
+ os.unlink(sysctl_vpp)
return None
render(service_conf, 'vpp/startup.conf.j2', config)
render(systemd_override, 'vpp/override.conf.j2', config)
+ render(sysctl_vpp, 'vpp/sysctl.conf.j2', config)
return None
@@ -148,6 +165,8 @@ def apply(config):
call('systemctl daemon-reload')
call(f'systemctl restart {service_name}.service')
+ call(f'sysctl -qp {sysctl_vpp}')
+
# Initialize interfaces removed from VPP
for iface in config.get('removed_ifaces', []):
host_control = HostControl()